But the Nxt developers have been very busy, and the latest release brings another set of bleeding-edge features. The API continues to expand, while the software requires minimal system resources to operate. A block-generating “full node” can run on a Raspberry Pi 2 and only costs about $50 in parts, and if you are reading this post you probably want to set up your own, so lets get started.

You’ll need the following:

Raspberry Pi 2

8GB+ microSDHC card (Class 6 or higher recommended)

Micro USB cable for power

Cat 5 network cable or USB wifi adapter

USB keyboard, monitor + HDMI cable (initial setup only)

Installing the OS

We will be using Linux because it is reliable, secure and free. Raspbian is the most widely used flavor of Linux for Raspberry Pi devices and it is well supported and maintained. As of this writing, the latest version of Raspbian is “Jessie” (2015-11-21), which is available for download on RaspberryPi.org. This will be a dedicated node and the client will only be accessed remotely, so I recommend using Jessie Lite since we won’t need a window manager.

OS Configuration

Once your microSDHC card is ready, you can boot your Raspberry Pi 2 for the first time. Insert the memory card, plug in your USB keyboard, ethernet cable and HDMI connection first, then power on the Raspberry Pi 2 by plugging in the micro USB cable. Many consumer routers sold today provide a USB port that should be able to power the Raspberry Pi 2, but if you are planning to use any peripherals (e.g. USB wifi) I recommend using a 1.0A+ USB A/C adapter.

After the system boots you should see the login prompt. The default username is pi and the default password is raspberry. Once you are logged in, run the following to install the latest OS updates:

sudo apt-get updatesudo apt-get upgrade

Next, start the OS configuration utility by typing the following:

sudo raspi-config

The first thing to do is change the default password to something secure. Choose “2 Change User Password” and follow the prompts to set a new password.

Select “9 Advanced Options”

Since we aren’t using a window manager we can reallocate some of the GPU memory to the OS. Select “A3 Memory Split” and set the value to 16.

If you want to be able to access your node from another computer via SSH you can enable the service under “A4 SSH”. I highly recommend hardening your SSH installation once you have everything working.

Finally, select option “1 Expand Filesystem” to rewrite the partition table of your microSDHC card and use the full storage capacity.

Once complete, press ESC to exit raspi-config and reboot your system:

sudo reboot

After logging in again, check and confirm that the root filesystem mounted on / has been expanded:

df -h

The size of the root filesystem should be close to the size of your microSDHC card.

Next we are going to increase the swap space by editing the swap configuration file and restarting the service:

sudo nano /etc/dphys-swapfile

Modify the line for CONF_SWAPSIZE and set it to 512 or 1024 and save the file (CTRL-O, ENTER, CTRL-X).

# set size to absolute value, leaving empty (default) then uses computed value
# you most likely don't want this, unless you have an special disk situation
CONF_SWAPSIZE=1024

Restart the swapfile service:

sudo service dphys-swapfile restart

Network Configuration

Since this will be a full node, you will need to allow peer-to-peer network traffic through your router firewall. Every network configuration is different so this section is going to be more of a general guideline. Assuming you are connected to a router with DHCP enabled, your Raspberry Pi 2 should already have a local IP address, otherwise you will need to configure a static IP address. To show your current network configuration:

inet addr is your local IP, HWaddr is your MAC address. In your router configuration, find the port forwarding settings and forward TCP/UDP traffic for port 7874 to the local IP address of your Raspberry Pi 2. If you aren’t using a static IP address, you should set up a DHCP static lease (aka DHCP reservation) for the MAC address and the local IP address. This way the Raspberry Pi 2 will always get the same local IP address that you configured with the port fowarding rule.

Installing Java

Nxt requires Java 8. You can download and manually install the Oracle JRE, or you can easily install the OpenJDK JRE:

Installing Nxt

Download the latest version of Nxt from the public repository. You can use the wget command in the console to directly download the file over HTTPS. As of this writing the current Nxt release is version is 1.7.4, but you will want to make sure you are using the latest version available.

If you were able to configure port forwarding on your router, set nxt.myAddress to your public IP address as shown in the output of the curl command, otherwise remove this line from the configuration file. For the other parameters, we’ve set the API to allow connections from everywhere. Once you have things working, you should consider restricting access to your local network or specific IP addresses. See nxt/conf/nxt-default.properties for descriptions of configuration parameters. Save the configuration file and exit the editor.

Edit the startup file and optimize the memory configuration:

nano ~/nxt/run.sh

Add the parameter -Xmx640m to increase the default the Java heap memory allocation to 640mb:

java -Xmx640m -cp classes:lib/*:conf nxt.Nxt

You are now ready to start the server. Since this is a fresh installation, your node will need to download the entire blockchain to synchronize with the Nxt network. In some cases, this can take a very long time depending on the speed of your network connection and the type of memory card you are using.

Startup & Connect

Nxt runs as a server process that provides an API and a web client interface. First, start the server:

cd ~/nxt./run.sh

You should see the Nxt server start up and synchronize with the network. When startup is complete you will see the following:

Quote from: mael on Today at 07:53:25 pmother thing: the adress who got my NXT (NXT-XVBJ-B8VA-Q7MB-HGZXQ) has received a lot of transactions the same day, same hour. What's this ?This appears to be someone run...

yes, I will do that for Ignis snapshot.I just trusted bter when they announced they will take the Ardor Snapshot.Look, this is what you can find looking on archive.org a version of bter main site on September, 18th, 2016[url=https://web.archive.org/...